/*
 * Copyright 2024 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package androidx.xr.arcore.playservices

import kotlin.time.AbstractLongTimeSource
import kotlin.time.DurationUnit

/** A time source that uses the native ARCore time as the clock. */
internal class ArCoreTimeSource() : AbstractLongTimeSource(DurationUnit.NANOSECONDS) {

    private var lastTimestamp: Long = 0L

    override fun read(): Long = lastTimestamp

    internal fun update(timestamp: Long) {
        lastTimestamp = timestamp
    }
}
